How to Open a Custodial Roth IRA with Vanguard in 6 Steps

March 4, 2026  |  By

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The best time to open a retirement account is when you first start working. But what if you're not even an adult yet? Great news! Kids and teens with earned income can still save for retirement. Read on to learn more about why and how you might want to help your kids open a custodial Roth IRA with Vanguard.

Why Open a Custodial Roth IRA

The short answer to why you should open a custodial Roth IRA is compound interest. The longer answer is the more time your money has to grow, the more it's worth!

Vanguard shows the difference $1 can be worth if you start investing at 20 compared to 55. It's the difference between turning that dollar into almost $6 versus just shy of $1.50. Obviously, we want to take the six bucks!

Compounding is even more powerful if you start before 20. By opening a retirement account as soon as your child has earned income, that money can grow for their future goals.

Opening a Custodial Roth IRA if You’re New to Vanguard

There are actually two different ways to open a custodial Roth IRA with Vanguard. The first one–especially helpful if you don’t already have an account with them–is to call Vanguard during normal business hours.

Call 800-551-8631 and ask to set up a custodial Roth IRA. You will be given a link to get the process started. 

Not excited about having to make a phone call? Can’t connect with them during regular business hours? We’ve got a second option for you that we’ll share next! 

How to Open a Custodial Roth IRA with Vanguard in 6 Steps

If you already have a Roth IRA with Vanguard or another account, you actually can set up a custodial Roth online. They just don’t make it easy! 

Step 1 – Log into your Vanguard account

If you are already a personal investor with Vanguard, simply enter your username and password. 

You can also create an account if you’re not currently a Vanguard customer. Then, you can bypass that phone call we talked about earlier. 

Step 2 – Click on Transact

Open an Account with Vanguard

After you’ve logged into the Vanguard site, find the Transact link at the top left of the screen. Choose the option to Open an Account option.

Step 3 – Open a New Account

Find the option that says “Open a new account” and click it. Then you'll have to choose between an investment account or Cash Plus account. For this purpose, choose “Open an investment account”.

You'll have the option to invest on your own or pay for Vanguard's advice services. For what we're discussing today, it may make sense to choose to invest on your own, but this choice is up to you. The Vanguard advice services are helpful and reasonably priced.

Be sure to read through the instructions about what comes next and as well as the requirements for opening an account. Then when you're ready hit “Select Your Account” to move to the next step and follow the prompts to open an investing account for a minor or “Minor IRA”.

Step 4 – Go Through the Prompts for a Brokerage Roth IRA

Open a Brokerage IRA with Vanguard

As a Vanguard account holder, you might recognize their account wizard. Choose “Open a Brokerage IRA” and then get specific “Brokerage Roth IRA” in the following screen. Fill in the fields with the information as prompted. 

Key steps will be to make sure that you:

  • Choose a Minor for the account owner
  • Enter the minor’s personal information, including birthdate and Social Security number
  • Identify your role as a Custodian 

Step 5 – Fund the Account

After you set up the account, you can start to fund it. Just make sure that you are only investing earned income. 

For instance, if your child earns $500 within the current year, the most money you can put into the custodial Roth IRA is $500 for that calendar year. 

Step 6 – Invest the Money

Once there is money in the custodial Roth IRA, you want to explore different investment fund options. We're fans of keeping things simple with index funds. Make sure that you pay attention to minimums and fees.

How to Open a Custodial Roth IRA with Vanguard

Frequently Asked Questions

Vanguard works hard to streamline the process of opening an account. But it’s possible you still have questions. 

Let’s explore answers to some of the most common questions about how to open a Custodial Roth IRA with Vanguard:

Can anyone open a Roth IRA?

Many people can open a Roth IRA, but not everyone! 

If you want to open a custodial Roth IRA with Vanguard, you need to make sure that you meet the following criteria:

  • Live and earn money legally in the United States
  • Fall under the income limits (Most adults don’t come close to this, so your kid or teen is likely to be fine but it never hurts to check the IRS guidelines)

To keep everything on the straight and narrow, it’s important that there is a paper trail of some kind when it comes to this money. So if your child isn’t paying taxes on the income, you likely want to explore other investment options, such as a custodial brokerage account with Vanguard. 

For more details on how to hire your child and open a Roth IRA legally straight from a CPA, check out the Kids Money Academy. It's helped me a lot!

Is Vanguard friendly for Beginners?

The answer here is a bit complicated!

If we’re being totally honest, Vanguard doesn’t make the initial process to open a custodial Roth IRA as simple as it should. For better or for worse, Vanguard has a bit of a reputation when it comes to the user experience offered by its website and app.

However, Vanguard is absolutely friendly for beginners in the sense that they put their investors first. Vanguard’s unique structure means that you are an account owner. So there’s no need to worry about them putting shareholders ahead of you–they’re one and the same at Vanguard! That’s part of why Vanguard has such a cult following of fans.

Another reason why we love Vanguard for beginners is that they really focus on low fees. If you’re new to investing, it’s easy to get overwhelmed by the fine print. A lot of people miss out on maximizing their money since they don’t notice the high fees that some companies charge. Vanguard pioneered low-cost “set it and forget it” investing, which is perfect for new investors.

It’s how millionaires are made!

How old do you need to be to open a Roth IRA?

To open a Roth IRA by yourself, you need to be 18 years old with earned income. However, if you want to open a custodial Roth IRA with Vanguard, you can do that on behalf of a minor as soon as they are old enough to have earned income. It’s one strategy that many families use to start building generational wealth! 

Doug Nordman did this for his daughter when she was a teenager and now she is virtually “set” when it comes to retirement!

Final Thoughts on How to Open a Custodial Roth IRA with Vanguard

Is your child or teen earning their own income? Do you think they are ready to learn more about saving and investing? Then, it might be time to open a custodial Roth IRA for them.

This account is a powerful way to help them learn more about the magic of compound interest and grow their money more than a traditional savings account can. Opening a Roth IRA now can set the up for a lifetime of financial success.

If want to explore the nuances of hiring your child from the perspective of a CPA, check out the Kids Money Academy! I'm glad I did.


Have you helped your child open a custodial Roth IRA with Vanguard? How are you building financial literacy and generational wealth for your family?

Please let us know in the comments below.


Andy Hill, AFC® is the award-winning family finance coach behind Marriage Kids and Money - a platform dedicated to helping families build wealth and happiness.

With millions of podcast downloads and video views, Andy’s message of family financial empowerment has resonated with listeners, readers and viewers across the world.

When he's not "talking money", Andy enjoys being a Soccer Dad, singing karaoke with his wife and relaxing on his hammock.

5 responses to “How to Open a Custodial Roth IRA with Vanguard in 6 Steps”

  1. ChasM Avatar
    ChasM

    This is excellent info. My need is slightly different but quite similar but first why a custodial Roth IRA instead of a custodial Traditional IRA? I am interested in the latter IRA for my grandkids, opening a custodial Traditional IRA account for each of them, invested in VTSAX Total Stock Market Index Admiral Class (ETF shares). The oldest is 18 years but the others are minors. Is that a problem? The goal is to give them the power of compounding in their IRA with no tax liability until they are retirement age. They can add to it or not, their choice as the years go by. Thanks again for your excellent article. It answers many questions I had.

    1. Jeremy Avatar
      Jeremy

      Hi ChasM – The main difference between Traditional and Roth is when the owner pays income tax. If the owner pays a lot of income tax now, contribution to Traditional IRA can lessen income tax burden now. In exchange, the owner pays income tax when he takes money out of Traditional IRA in retirement. Roth IRA is the opposite. Roth IRA contribution doesn’t impact income tax burden now. That is, the owner contribute into Roth IRA with money that has already been taxed. In exchange, when the owner takes money out of Roth IRA decades later in retirement, there is no tax whatsoever. Now to answer your question, since your grandkid’s income is likely below the income tax threshold now, he doesn’t get any tax saving benefit now from Traditional IRA. It is more advantageous to go with Roth IRA and he won’t have to pay income tax on funds withdrawn from Roth IRA in retirement.

  2. nishit Avatar
    nishit

    Beautifully Explained !

    1. Andy Hill Avatar

      I’m glad it was helpful!

  3. Steve Avatar

    We opened an account up for our sons and it has been a great investment and teaching tool.

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